T
TanStack•6mo ago
fascinating-indigo

How to achieve a slot pattern in a Tanstack router?

#react-router, #dynamic-navbar Requirement: - I have a top navbar which renders profile dropdown which is the same across the app. - Another section of this navabar is the dynamic section. How can I control this dynamic section based on which page is rendered ? In react router v6 I have solved this problem using context and slots for dynamic content on Navbar. I will share react router code if required .
4 Replies
robust-apricot
robust-apricot•6mo ago
use layout routes and the <Outlet/> component
fair-rose
fair-rose•6mo ago
For the dynamic section you can use the hook useMatches and see which page is rendered, and access their loader data if you need https://tanstack.com/router/latest/docs/framework/react/api/router/useMatchesHook
useMatches hook | TanStack Router React Docs
The useMatches hook returns all of the objects from the router regardless of its callers position in the React component tree. [!TIP] If you only want the parent or child matches, then you can use the...
fascinating-indigo
fascinating-indigoOP•6mo ago
Do you have any example of how to inject dynamic ui to layout component when page change ?
rare-sapphire
rare-sapphire•5mo ago
Normally if you did need to do this based on a child route, it would be something like 
const isSpecificChildRoute = useMatches({
  strict: false,
  select: (matches) => matches.some((match) => match.id)
})

return (
  <>
    {isSpecificChildRoute && "your thing here"}
    <Outlet />
  </>
)
const isSpecificChildRoute = useMatches({
  strict: false,
  select: (matches) => matches.some((match) => match.id)
})

return (
  <>
    {isSpecificChildRoute && "your thing here"}
    <Outlet />
  </>
)
I think there is another property on match that is actually typesafe, but I forget which one. If you are making a layout route, and only care about the routes inside of that layout, you could also use useChildMatches which narrows the matches to only those in the outlet,

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